George Jahad created HDDS-7168:
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Summary: Prevent writes to keys that start with ".snapshot"
Key: HDDS-7168
URL: https://issues.apache.org/jira/browse/HDDS-7168
Project: Apache Ozone
Issue Type: Sub-task
Reporter: George Jahad
The snapshot design defines a key prefix for use with snapshots:
".snapshot/snapshotName". Any read of a key with that prefix should be be read
from the corresponding snapshot.
But nothing currently prevents key writes from inadvertenly using that prefix,
and if they do, they will not be readable.
To prevent user confusion, we should disallow them from writing any keys with
the ".snapshot" prefix.
One possible approach would be to add a preExecute method to the OMKeyRequest
class, (which is a parent of the key write commands.) That method would check
the key and throw an invalid key error if needed. (OMKeyRequest would likely
need to add an abstract method that each of the specific write classes would
need to implement.)
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